JPS5819781B2 - Jacquard device for warp knitting machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a jacquard device for a warp knitting machine, which comprises at least one swingable jacquard dropper bar and an immovable batten attached to the jacquard dropper bar. , through which the thread is guided upwards to the jacquard control device.

In warp knitting machines which have a relatively large number of guide bars, the guides move considerably in the swing direction when the knitting needles are stationary.

However, if one or more of these guide bars is designed as a Jacquard guide bar and these Jacquard guides are subjected to the action of a dropper of a Jacquard device, the Jacquard guide or the corresponding dropper bar, especially in its end position, , the unfavorable tension of the highly swung thread acts on the droppers, which causes these droppers to be miscontrolled.

For this reason, such warp knitting machines can only be provided with a relatively small number of guide bars, and the variety of pattern knitting agents is accordingly limited.

The same problem arises in double-row needle bed warp knitting machines with a Jacquard guide bar, where the guide bar also moves in the swing direction together with the Jacquard guide bar.

In this case, the pile height of the knitted fabric to be knitted is significantly limited due to the above-mentioned circumstances when the yarn is guided.

For this reason, the guide bar is placed immovably in the swing direction,
A transverse movement has now been effected by means of the needle bed, but this has had the result that, in particular, the rotational speed of the knitting machine has to be severely limited.

In a guide bar suspension mechanism movable in the swing direction with a Jacquard guide bar and a large number of guides, the problem of avoiding an undesirable influence on the Jacquard dropper due to thread threading is solved according to the invention. A member for storing or redirecting the thread is provided, and the thread storage amount of the member becomes maximum at one end position of the swing motion of the suspension shaft and becomes minimum or zero at the other end position. has been done.

In this case, a certain length of thread is stored at one swing end position of the reed in the swing direction, and the stored thread amount is gradually reduced as the thread moves to the other end position,
When this other end position is reached, the thread storage is minimal or completely eliminated, so that no undesirable tension on the thread occurs, and thus the jacquard dropper has no undesirable effects during the entire movement process. I don't accept it.

Furthermore, according to the invention, storing the thread is carried out by arranging a second batten or the like, in which case the thread is also guided through the holes of this second batten. and the second batten is arranged to be movable laterally relative to the first batten.

The control of the second, movable batten takes place in that the batten is attached to a guide bar suspension or to a suspension shaft or to a drive of the suspension shaft.

Thereby, one end position of said second, movable batten corresponds to an end position in the opposite direction of the swing movement of the suspension shaft.

Furthermore, if a relatively large number of threading groups are to be guided through the batten in parallel, it is advantageous for space reasons to arrange the stationary batten and/or the movable batten at an angle. .

The invention will now be explained with reference to the illustrated embodiment.

In the drawing, a dropper bar 2 movable in the wrapping direction is supported on a suspension shaft 1 of a warp knitting machine, and the dropper bar 2 carries out a swinging movement in the direction of the arrow 3.

The associated Jacquard guide bar and a further guide bar, which is also mounted on the suspension shaft, have been omitted for clarity in the drawing.

A thread 5 is hooked to the dropper 4 of the jacquard dropper bar 2, and the thread 5fd is guided upwardly through a stationary batten (first batten) 6 in the usual manner. There is.

In FIG. 1, the dropper bar is shown in its forward position, in other words at one end of the swinging movement.

In this position the threading thread 5 is in the illustrated embodiment with a movable batten (
It is deflected by a second batten (7), so that the thread is stored when it is guided.

The movable batten 7 is attached to a lever 8, which is fitted onto the suspension shaft 1.

By the way, as the dropper bar 2 moves from one end position in FIG. 1 to the intermediate position in FIG. 2 to the other end position in FIG.
In the other end position of the figure it virtually disappears.

The movement of the movable batten 7 required for this purpose is automatically controlled inversely by the suspension shaft and the lever 8.

Due to the storage of the thread 5 in one end position and the depletion of this stored thread in the other end position, an undesirable tension is created in the thread by the movement of the dropper bar 2 over a relatively long distance in the swing direction. Therefore, an undesirable operation of the jacquard drop 4 is avoided.

In the third embodiment, the two battens, i.e. the stationary batten 6 and the movable batten 7, are arranged at an angle to each other. In the embodiment shown, the additional batten 7 is located on the suspension axis. 1
It moves in an arc based on the fact that it is supported by the

However, it is also possible to impart a linear reciprocating motion to the movement of the battens 1 by known means.

[Brief explanation of the drawing]

FIG. 1 shows the jacquard dropper bar and the batten device of the present invention in the front position of a warp knitting machine, FIG. 2 shows the same device in an intermediate position, and FIG. 3 shows the device in the rear position. FIG. 3 shows a jacquard dropper bar with battens arranged at an angle with respect to each other;

Claims (1)

[Claims] 1. A jacquard device for a warp knitting machine, comprising at least one jacquard dropper bar capable of swing movement;
an immovable batten associated with the Jacquard dropper bar, through which the threading thread is guided upwards to the Jacquard control device, through holes in the batten, the threading 5 being A second batten 7, which is connected to the dropper 4 at a location remote from the suspension shaft 1 of the warp knitting machine and has a hole through which the thread 5 passes, is located between the stationary batten 6 and the dropper 4. It is arranged as a storage member for storing a part of the entire length of the thread 5, and the second batten 7 is arranged in one direction of the swing movement relative to the first, stationary batten 6. It should be movable in the lateral direction with respect to the first immovable batten 6 so that the thread storage amount becomes maximum at one end position and the thread storage amount becomes minimum or zero at the other end position. A jacquard device for warp knitting machines featuring: 2. Jacquard device according to claim 1, wherein one end position of the movement of the second battens 7 corresponds to an opposite end position of the swing movement 3 of the suspension shaft 1. 3. A jacquard device according to claim 1, in which the support lever 8 of the second batten is fixedly fitted onto the suspension shaft 1. 4. The jacquard device according to claim 1, wherein the stationary batten 6 and the movable batten 7 are arranged at an angle to each other.